condition mean min max 12pM Fe,Midday 0.379626 0.379626 0.379626 12pM Fe,Midnight 0.26230699999999996 0.129818 0.394796 58pM Fe,Midday 0.335911 0.335911 0.335911 58pM Fe,Midnight 0.1379448857142857 0.0 0.449525 233pM Fe,Midnight 0.05297673333333334 0.0 0.0801237 1160pM Fe,Midday 0.014215814285714284 0.0 0.0995107 1160pM Fe,Midnight 0.082076175 0.0 0.199846 High carbon,Dark 1.5396367333333334 0.0 6.34278 High carbon,Light 0.7925236153846154 0.0 2.69002 Low carbon,Dark 0.822504 0.822504 0.822504 Phloroglucinol 3.2520516666666666 0.792945 4.48308 Silicon starvation,12h 0.143997 0.143997 0.143997